Antifriction bearing



Sept. 30. 1924. LSMLSS'? K. WILLIAMS v ANTIFRICTION BEARING Filed Dec. 2'7. 1921 RSA vltatenited Sept, F924.

atraer rarest' ortica.

KEITH WILLIAMS, OF CHICAGO, ILLINOIS, AssIGNoR, 'BY MESNE ASSIGNMENTS, To

W. H. MINER, INC., A CORPORATION OF DELAWARE.

ANTIFRICTION BEARING;

-Application filed December 27, 1921. Serial No. 525,051.

To @ZZ whom t may concern:

. Be it known that I, KEITH WILLIAMS, a citizen of the United States, residing at Chicago, in the countyof Cook and State of Il linois, have invented a certain new and useful r Improvement in Antifriction Bearings, of

which the following is' a full, clear, concise,

and exact description, reference being had to the accompanying drawings, forming a part of this specification.

i This invention relates to improvements inanti-friction bearings.

In the manufacture, shipping and application of anti-friction bearings, particularly anti-friction bearings employed as side bearings on railway cars, it is highly essential that the entire device be shipped completely assembled without possibility of any of the parts becoming lost or disarranged either accidentally or from deliberate tampering. Many expedients have heretofore been suggested for permanently retaining the parts of side bearings in assembled relation, but many of the same have not proved entirely e5 satisfactory due to either the expense of applying such retaining means or the difficulty in always applying the same properly, due to the variations which necessarily occur in the manufacture of the parts, most of which :zo are in the form of castings. u

The Object of my invention is to provide a simple, effective and relatively inexpensive means for retaining the parts of an antifriction bearing in assembled relation and more particularly as applied to a side bearing for railway cars.

In the drawing forming a part of this specification, Figure l is a vertical sectional view taken parallel to the length of a car through the ends of the body and truck bolsters and showing my improvements in connection therewith. And Fig. 2 is a vertical sectional view corresponding substantially to the broken section line 2-2 of Figure l.

In said drawing, l() indicates the under side of a body bolster of a car and l1 the upper side of an opposed truck bolster. In the instance shown, the improved side bearing i-s applied to the truck bolster and the same comprises, broadly, a housing, base casting or retaining member designated generally by the reference A; a wear or bear ing plate B; a rolling anti-friction element proper C; and"special means for retaining the parts assembled hereinafter specifically described. A

The retaining member or base castingA, as shown, is formed with a bottom wall 1Q, vertically extending spaced side walls 13-13, vertically extending end walls lA-lt, reenforcing and limiting ribs 15--15 on the interior of the casting at the ends thereof, and corner lugs or ears 16-16 by which the castino' is adapted to be riveted or otherwise rigidly secured to the truck bolster.

Cn its interior, the base casting A, in the bottom thereof, is preferably provided with a pair of upstanding knobs or teeth 17-17 which extend through correspondingly located openings or perforations 18-18 in the preferably hardened wear plate B. The thickness of the wear plate B is less than the height of the teeth 17, so that portions of the latter project upwardly and are adapted to engage in corresponding openings 19l9 provided in the bottom ofthe antiefriction element C to thereby prevent the latter from being shifted bodily with respect to the base casting A The antifriction element proper C, in the form shown, is of the rolling rocker gravity selfcentering type and is preferably formed with top and bottom concentric bearing surfaces 20 and 21, the latter being of longer radius than the former. Said top and bottom bearing surfaces 20 and 2l are merfred with arcuate side surfaces 22-22. W ith the arrangement shown, it is evident that, when the element C is shifted to either side of its normal central position shown in Figure l, the center of mass is elevated and consequently the element will automatically return to central position upon removal of the actuating force.

To retain the anti-friction element C in assembled relation with the base casting A, I have provided the following means. The anti-friction element C is initially formed or cast with an opening 23 extending axially therethrough, within which is inserted a pin D, the latter being of such length that its ends project beyond the ends of the antifriction element C and within arcuate elongated openings 24f-24 provided in the side walls 13 of the base casting A. The vertical height or width of the openings Q/l is made appreciably greater than the diameter of the pin D, The latter is provided at one diameter that it may be applied with a driving fit. The length of said bushing is also such that the end ofthe pin D will extend slightly beyond the outer edge of the bushing, so that said extremeend of the pin mayv befpeene'd or riveted over the bushing, as indicated at 126. The pin D' is inserted in place afterv the anti-friction element C has been placed Within the base casting and the bushing 25 thereafter applied. Vilith the features shown and described, it is evident that lthe anti-friction element C cannot be re-` moved from the base casting Without the use of special tools andthe destruction or mutilation 'of some of the parts, and the antifriction element C will, in turn, retain the bearing plate B in its proper position.

."'I claimz` f l1. In an anti-friction bearing, `the combination with a retaining member provided Withspaced integral side Walls and having a'longitudinally extending bearing surface; of an anti-friction element adapted to have rollinofcontact with said bearing surface and lolcatelbetvveen said side Walls; and means for retaining said element in assembled relation With said retaining member, comprising a pin headed at one end and extending through the anti-friction element and having its'ends projecting beyond the ends of the anti-friction element, a bushing on the other extended end of said pin rigidly and permanently attached thereto, the side Walls of the retaining vmember having elongated openings therethrough within which `said i ends of the pin are adapted to Work back and forth, all the portions of said bushing,

`of the headed end of the pin and of the pin nation with a retaining member having spaced, integrally formed side walls each with an elongated slot therein; of an 'fantif friction element disposed Within said retaining member between said side Walls and adapted for rolling movement, said element having a vbore extended therethrough; and means for positively retaining said/element and member in assembled relationicomprising:V a pin extending through Isaid bore of said element and elongated suificiently for its ends to project beyond'eachend o" 'said element and Within the respective slots of the side Walls; and means on each said gextendedv end of said pin rigid andassociated with said pin, each of said means lbeing of larger diameter than the bore of said element whereby to prevent axial removal of saidv pin from said element, the means on at least one end of said pin being applicable to the pin after vthe -pin has been 4inserted through said element'and of such .character that removal thereof is impossible Without destructive eieet after the-parts have been assembled.

In Witness that I claim the foregoing I have hereunto subscribed my'name this 9th day ofDec., 1921.

i 'KEITH VILLIAMS.

Witnesses.

UNA C. GRIGSBY, ANN BAKER. 

